5BIR
DISECTING HISTIDINE INTERACTIONS IN RIBONUCLEASE T1 USING ASN AND GLN MUTATIONS
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | RIBONUCLEASE T1 | polymer | 104 | 11084.7 | 2 | UniProt (P00651) Pfam (PF00545) | Aspergillus oryzae | RNASE T1 |
| 2 | C, F (A, B) | GUANOSINE-2'-MONOPHOSPHATE | non-polymer | 363.2 | 2 | Chemie (2GP) | |||
| 3 | D, E (B) | CALCIUM ION | non-polymer | 40.1 | 2 | Chemie (CA) | |||
| 4 | G, H (A, B) | water | water | 18.0 | 138 | Chemie (HOH) |
Sequence modifications
A, B: 1 - 104 (UniProt: P00651)
| PDB | External Database | Details |
|---|---|---|
| Lys 25 | Gln 51 | conflict |
| Gln 92 | His 118 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 22169.4 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 806.6 | |
| All* | Total formula weight | 22975.9 |
